Abstract: A dish washer is provided that includes a tub that defines a space for washing dishes, a water supply unit that has a water chamber where water supplied from the outside collects, to wash the dishes, a sump that is supplied with water from the water chamber and supplies wash water into the tub, and a heat exchange passage through which the wash water in the sump flows and exchanges heat with the water in the water chamber while flowing.

Abstract: Disclosed are a mobile robot and a controlling method thereof. The mobile robot comprises: a case; and a sensor unit having two or more sending portions and two or more receiving portions arranged on an outer surface of the case separately and alternately. The plurality of sending portions and receiving portions are arranged in an alternating manner, thereby having a directivity. Also, since signals received through the receiving portions are judged based on a reference value, an area unallowable to be detected for an obstacle sensing is minimized, which allows an obstacle to be detected more accurately. When the obstacle corresponds to a side wall on the basis of a moving path of the mobile robot, a distance between the side wall and the mobile robot is calculated based on signals received by the receiving portion closest to the side wall. Accordingly, the mobile robot can move with maintaining a constant distance from the side wall.

Abstract: An embodiment relates to a dish washer. A dish washer according to an embodiment comprises: a tub that defines a space for washing dishes; a water supply unit that has a water chamber where water supplied from the outside collects, to wash the dishes; a sump that is supplied with water from the water chamber and supplies wash water into the tub; and a heat exchange passage through which the wash water in the sump flows and exchanges heat with the water in the water chamber while flowing.

Abstract: Embodiments relate to a dish washer and a control method of the dish washer. A dish washer according to an aspect of the present invention comprises: a water supply unit that has a water chamber collecting water that is used to wash dishes; a sump that is supplied with the water in the water chamber and supplies wash water into a tub; a filter unit that is disposed in the sump and filters foreign substances in the wash water; and a heat exchange passage for heat exchange between the wash water in the sump and the water collecting in the water chamber, in which the wash water that has exchanged heat with the water chamber is discharged to the filter unit.

Abstract: A robot includes a second bumper that senses an obstacle having such a height that can be passed over. Thus, the robot can pass over the obstacle without avoiding it.

Abstract: A suction head is provided for removing debris from a surface. The suction head includes a suction nozzle which has a generally semi-circular groove formed on an interior surface of the suction nozzle. Additionally, there is a suction hole formed at a generally central region of a rear surface of the nozzle and communicating with the semi-circular groove. Further, a uniform pressure forming region is provided at a longitudinally extending side of the semi-circular groove, and a suction pipe is mounted to the suction hole to guide air in the semi-circular groove through the suction hole.

Abstract: A robot includes a second bumper that senses an obstacle having such a height that can be passed over. Thus, the robot can pass over the obstacle without avoiding it.

Abstract: A suction head is provided for removing debris from a surface. The suction head includes a suction nozzle which has a generally semi-circular groove formed on an interior surface of the suction nozzle. Additionally, there is a suction hole formed at a generally central region of a rear surface of the nozzle and communicating with the semi-circular groove. Further, a uniform pressure forming region is provided at a longitudinally extending side of the semi-circular groove, and a suction pipe is mounted to the suction hole to guide air in the semi-circular groove through the suction hole.

Abstract: A blower fan includes a shroud, a hub for guiding airflow being discharged, and a plurality of blades disposed between the shroud and the hub. A first outer diameter of a first portion, which is close to the hub, of the blade is different from a second outer diameter of a second portion, which is close to the shroud, of the blade.

Abstract: Disclosed is an indoor unit of an air conditioner, in which at least one air inlet is formed at part of or entire bottom surface the indoor unit and an evaporator is installed between the air inlets and a blowing fan so that indoor air sucked in through air inlets passes through the evaporator and is discharged from an outlet vent formed at the front surface of the indoor unit by the operation of a blowing fan. The indoor unit of the air conditioner includes air inlets, an evaporator, a blowing fan, and an outlet vent, wherein the air inlets are formed in an opposite direction of the outlet vent for discharging cooled air; the air inlets are formed on the bottom surface of the indoor unit; indoor air flown into the indoor unit passes through the evaporator and the blowing fan and is discharge from the outlet vent; and air path from the air inlets en route to the outlet vent via the evaporator and the blowing fan is not overlapped.

Abstract: Provided is an improved blower fan structure in which length of blades is increased and inlet and outlet angles of the blades are optimized for highly increasing an efficiency of the blower fan. Particularly, an outer diameter of the blades is more than or equal to two times of an inner diameter thereof, for increasing the efficiency without generating a noise.

Abstract: A piping structure of an air conditioner causes a looped main piping connected to a compressor of an outdoor unit of the air conditioner to be branched into two or more branch pipings within a predetermined interval of the main piping and cause the branch pipings to be jointed at an arbitrary location. According to the piping structure, it is possible to reduce a vibration by an interference phenomenon, which is generated when either a refrigerant pulsation or a periodic vibration of the compressor is divided and then combined.

Abstract: A heat exchanger including first and second header tanks for receiving and discharging refrigerant. Further, the first and second header tanks are spaced apart from each other by a predetermined distance. Also include is a plurality of flat tubes each having opposite ends respectively connected to the first and second header tanks, in which each of the flat tubes has channels through which the refrigerant scatters and flows, and the channels have a different capacity from each other. Further included is a cooling member for discharging heat of the refrigerant flowing along the flat tubes.

Abstract: Disclosed is an oil supply apparatus for a hermetic compressor including an oil feeder mounted at a bottom end of a crank shaft rotated by a driving unit, for sucking oil, an oil passage formed inside the crank shaft, for guiding the oil sucked by the oil feeder, and an oil injection hole formed on a sleeve inserted onto an eccentric unit formed at the top end of the crank shaft, for injecting the oil sucked into the oil passage into a cylinder for compressing fluid. The oil supply apparatus for the hermetic compressor improves efficiency of the compressor by efficiently cooling the cylinder by sufficiently supplying the oil stored at the lower portion of the casing to the cylinder.

Abstract: A heat sink and a method for processing the surfaces of the heat sink are disclosed. The heat sink and a method for processing the surfaces of the heat sink can improve performance of heat dissipation of the heat sink per volume as a plurality of fine wires based on nanometer or micrometer units are grown on the surfaces of the base and heat-dissipative fins of the heat sink through an oxidation process. Here, the total volume of the heat sink is scarcely increased, but rather their surface area and surface roughness are increased.

Abstract: Disclosed is a axial flow fan of an outdoor unit of an air conditioner. The axial flow fan comprises a hub connected with a rotational shaft of a motor; and at least one blade contacting the hub, wherein the blade has a part from the hub to a predetermined portion of the blade among a whole part from the hub to an outer end of the blade, and the other part from the predetermined portion of the blade to the outer end of the blade, the part being equally applied at a predetermined rake angle, and the other part being raised in a direction of a pressure surface of the blade, and wherein a ratio of an inner diameter and an outer diameter of the axial flow fan is between about 0.35 and about 0.4.

Abstract: Object of the present invention is to improve a structure of the air conditioner, to provide an air conditioner which can dispose of condensed water from an evaporator within the air conditioner itself without discharging to outside of the air conditioner, and improve an air conditioner efficiency. To achieve the object of the present invention, the air conditioner of the present invention includes a condenser which generates a high temperature heat, an evaporator which absorbs an external heat, and forms condensed water on a surface thereof by a temperature difference with an external air, and condensed water self disposal means for transferring the condensed water on the surface of the condenser to a condenser side, and evaporating the condensed water from the surface of the condenser by the high temperature heat from the condenser, thereby disposing of the condensed water within the air conditioner itself.

Abstract: An apparatus and method for transferring data stored in a memory to another memory, and an apparatus and method for shifting data by the specified number of bits at a time of transferring data and transferring the shifted data to another memory. The conventional direct memory access (DMA) device sequentially stores data from the first area of a memory address when the data is read from the first memory and the read data is stored in the second memory. Values are set in a control register of the DMA device so that the data is shifted by the specified number of bits at a time of transferring data and the shifted data is transferred in accordance with the described method. Specified data is shifted according to a predetermined value set in the control register and the shifted data is transferred to another memory.

Abstract: Object of the present invention is to improve a structure of the air conditioner, to provide an air conditioner which can dispose of condensed water from an evaporator within the air conditioner itself without discharging to outside of the air conditioner, and improve an air conditioner efficiency.

Abstract: Object of the present invention is to improve a structure of the air conditioner, to provide an air conditioner which can dispose of condensed water from an evaporator within the air conditioner itself without discharging to outside of the air conditioner, and improve an air conditioner efficiency. To achieve the object of the present invention, the air conditioner of the present invention includes a condenser which generates a high temperature heat, an evaporator which absorbs an external heat, and forms condensed water on a surface thereof by a temperature difference with an external air, and condensed water self disposal means for transferring the condensed water on the surface of the condenser to a condenser side, and evaporating the condensed water from the surface of the condenser by the high temperature heat from the condenser, thereby disposing of the condensed water within the air conditioner itself.